Datasheet > ADT7519ARQZ1-REEL7

ADT7519ARQZ1-REEL7

更新时间： 2022-11-26 05:13:39

品牌	Logo	应用领域
亚德诺 - ADI		传感器温度传感器
页数	文件大小	规格书
44页	1873K
描述
SPI/I2C Compatible, Temperature Sensor, Four Channel ADC and Quad Voltage Output DAC

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ADT7516/ADT7517/ADT7519

ADT7516/

ADT7517/

ADT7519

ADT7516/

ADT7517/

ADT7519

LOCK AND

SELECT SPI

10kΩ

SDA

SCL

SPI FRAMING

EDGE

820Ω 820Ω 820Ω

I C ADDRESS = 1001 000

ADD

DIN

SCLK

DOUT

Figure 57. Typical I²C Interface Connection

Figure 58. Typical SPI Interface Connection

(START HIGH)

SPI LOCKED ON

THIRD RISING EDGE

SPI FRAMING

EDGE

(START LOW)

SPI LOCKED ON

THIRD RISING EDGE

SPI FRAMING

EDGE

Figure 59. Serial Interface—Selecting and Locking SPI Protocol

I²C Serial Interface

a 7-bit address (MSB first) plus a R/ bit, which

determines the direction of the data transfer, i.e., whether

data will be written to or read from the slave device.

Like all I2C compatible devices, the ADT7516/ADT7517/

ADT7519 have a 7-bit serial address. The four MSBs of this

address for the ADT7516/ADT7517/ADT7519 are set to 1001.

The three LSBs are set by Pin 11, ADD. The ADD pin can be

configured three ways to give three different address options:

low, floating, and high. Setting the ADD pin low gives a serial

bus address of 1001 000, leaving it floating gives the address

1001 010, and setting it high gives the address 1001 011. The

recommended pull-up resistor value is 10 kΩ.

The peripheral whose address corresponds to the

transmitted address responds by pulling the data line low

during the low period before the ninth clock pulse, known

as the Acknowledge Bit. All other devices on the bus now

remain idle while the selected device waits for data to be

read from or written to it. If the R/ bit is 0 the master will

write to the slave device. If the R/ bit is 1, the master will

There is an enable/disable bit for the SMBus timeout. When this

is enabled, the SMBus will time out after 25 ms of no activity. To

enable it, set Bit 6 of the Control Configuration 2 register. The

power-on default is with the SMBus timeout disabled.

read from the slave device.

2. Data is sent over the serial bus in sequences of nine clock

pulses: eight bits of data followed by an acknowledge bit

from the receiver of data. Transitions on the data line must

occur during the low period of the clock signal and remain

stable during the high period, because a low to high tran-

sition when the clock is high may be interpreted as a stop

signal.

The ADT7516/ADT7517/ADT7519 support SMBus packet

error checking (PEC), but its use is optional. It is triggered by

supplying the extra clocks for the PEC byte. The PEC is

calculated using CRC-8. The frame clock sequence (FCS)

conforms to CRC-8 by the polynominal

3. When all data bytes have been read or written, stop

conditions are established. In write mode, the master will

pull the data line high during the 10th clock pulse to assert

a stop condition. In read mode, the master device will pull

the data line high during the low period before the ninth

clock pulse. This is known as No Acknowledge. The master

will then take the data line low during the low period

before the 10th clock pulse, and then high during the 10th

clock pulse to assert a stop condition.

C x

( )

= x⁸+ x²+ x¹+1

Consult the SMBus specification (www.smbus.org) for more

information.

The serial bus protocol operates as follows:

1. The master initiates a data transfer by establishing a start

condition, defined as a high to low transition on the serial

data line SDA while the serial clock line SCL remains high.

This indicates that an address/data stream will follow. All

slave peripherals connected to the serial bus respond to the

start condition and shift in the next eight bits, consisting of

Rev. A | Page 38 of 44

1...35 36 373839 40 41...44

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与ADT7519ARQZ1-REEL7相关器件

型号	品牌	获取价格	描述	数据表
ADT7519ARQZ-REEL	ADI	获取价格	SPI-/I2C-Compatible, Temperature Sensor,4-Channel ADC and Quad Voltage Output
ADT7519ARQZ-REEL7	ADI	获取价格	SPI-/I2C-Compatible, Temperature Sensor,4-Channel ADC and Quad Voltage Output
ADT75ARM	ADI	获取价格	+-1∑C Accurate, 12-Bit Digital Temperature Se
ADT75ARM-REEL	ADI	获取价格	+-1∑C Accurate, 12-Bit Digital Temperature Se
ADT75ARM-REEL7	ADI	获取价格	+-1∑C Accurate, 12-Bit Digital Temperature Se
ADT75ARMZ	ADI	获取价格	+-1∑C Accurate, 12-Bit Digital Temperature Se
ADT75ARMZ-REEL	ADI	获取价格	+-1∑C Accurate, 12-Bit Digital Temperature Se
ADT75ARMZ-REEL7	ADI	获取价格	+-1∑C Accurate, 12-Bit Digital Temperature Se
ADT75ARZ	ADI	获取价格	+-1∑C Accurate, 12-Bit Digital Temperature Se
ADT75ARZ-REEL	ADI	获取价格	+-1∑C Accurate, 12-Bit Digital Temperature Se

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